.gotop{
    width: 56px;
    height: 330px;
    position: fixed;
    right:100px;
    top: 400px;
}

.scroll{
    width: 56px;
    height: 290px;
    padding: 5px 0;
    border-radius:8px;
    border: 1px solid #ccc;
    position: absolute;
    overflow: hidden;
}

.aerial{
    width: 56px;
    height: 30px;
    position: relative;
    overflow: hidden;
}

.aerial-left{
    display: inline-block;
    width: 6px;
    height: 25px;
    border-radius: 3px;
    background-color: black;
    margin-left: 21px;
    margin-top: 11px;
    transform-origin: 50% 100%;
    transform: rotate(-42deg);
}

.aerial-right{
    display: inline-block;
    width: 6px;
    height: 25px;
    border-radius: 3px;
    background-color: black;
    margin-top: 11px;
    transform-origin: 50% 100%;
    transform: rotate(42deg);
}
.move1{
    animation: moveleft 0.6s ease-in-out infinite alternate;
}
.move2{
    animation: moveright 0.6s ease-in-out infinite alternate;
}
@keyframes moveleft{
    0%{}
    100%{
        transform: rotate(-20deg);
    }
}
@keyframes moveright{
    0%{}
    100%{
        transform: rotate(20deg);
    }
}

.scroll-content{
    width: 100%;
    height: 26px;
    cursor: pointer;
    text-align: center;
    line-height: 26px;
    font-size: 15px;
    color: #505050;
    padding: 2px 0;
}

.scroll-content:hover{
    color: #fff;
    background-color: #00A1D6;
    transition: 0.4s;
}

.gotopbtn{
    width: 100%;
    height: 28px;
    text-align: center;
    line-height: 28px;
    font-size: 35px;
    position: absolute;
    bottom:8px;
    vertical-align: middle;
    border-top: 1px solid #ccc;
    cursor: pointer;
}